A new warning light on your dashboard? You don’t figure out why it doesn’t shut off… It’s typical, an automobile is complicated and there are various motives why a light might occur. In cases where your glow plug light comes on while driving your Citroen C4 Cactus, it may show different concerns. On this page, we will do everything we can to help you see things more clearly. First, we will find out how the preheating light on your Citroen C4 Cactus operates, and then the different motives it lights up when you are driving

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What is the goal of my Citroen C4 Cactus glow plug light?

The primary purpose of the engine glow plug light, which is generally symbolized by a yellow coil, is to guarantee that your glow plugs are working effectively. In fact, it must light up when you switch on your Citroen C4 Cactus to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not expected to stay or come on while driving with your car. Nevertheless, if it turns on while driving, it may show several failures, we will try to summarize the main ones.

What to do if the glow plug light comes on while driving on my Citroen C4 Cactus?

A glow light that comes on while driving on your Citroen C4 Cactus or at any other time other than when the engine is started is meant to warn you to a fault other than your spark plugs, we will check out this right now. Whatever the case, a switch to the diagnostic tool will allow you to precisely understand the reason for the light up of your glow light.

My Citroen C4 Cactus glow light comes on and I’m having a loss of power

The first probability is that you notice that your glow plug light comes on while driving your Citroen C4 Cactus and that you also encounter a loss of power. In this case, different concerns can explain its presence. Here is a list of the main motives:

  • Problem of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is blocked, in such a case, it is obvious that your preheat light comes on while driving on Citroen C4 Cactus because it is one of the problem of which it is meant to alert you. Have the status of your valve checked
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can result in turbo boost and a disturbance in the performance of the turbo.
  • Problem relevant to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that affect its proper operation.
  • Finally, the last problem that could lead to a glow indicator light on your Citroen C4 Cactus coupled with a loss of power, is that your fuel filter is too dirty, you should feel jerks because of a bad fuel flow in the engine.

My glow plug light comes on or is flashing but no difference on the performance of my Citroen C4 Cactus

To conclude, we’ll give you the motives for a glow plug light that comes on on your Citroen C4 Cactus without you feeling any difference in power or car behaviour. In general, this is an electronic fault:

  • Glow plug relays or fuses to be swapped out, test and change if necessary.
  • A contactor/potentiometer on one of your pedals (brake, accelerator or clutch) has failed, often a simple de-seizure will be enough to resolve the problem.
  • You have a false contact somewhere in your electrical circuit, test the other alternatives first because it is not easy to find it alone, we encourage you to go to your technician.
  • Faulty injection pressure sensor, ECU error

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